Centrifugal separator.



T. S. PATTERSON.

UBNTBIFUGAL SEPABATOB.

Ammon-10N FILED rms. 1, 1901. 926,596. Patented June 29, 1909. 2 SHEETS-SHEET 1.

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T. S. PATTERSON.

l GENTBIPUGAL SEPARATOR.

APPLICATION FILED PEB-1, 1907. 926,596. Patented June 29. 1909.

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'UNITED swamps-PATENT OFFICE.

THOMAS S. PATTERSON, OF ROSEMONT, PENNSYLVANIA, ASSIGNOR TO THE OIL AND WASTE SAVING MACHINE COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

CENTRIUGAL SE PARATOR.

Application lled February 1, 1907. Serial No. 355,305.

To all whom it may concern.'

Be it known that I, THoMAs S. PATTER- SON, a subject of the King of lGreat Britain and Ireland, residing at Rosemont, Pennsylvania, have-invented certain Im rovements in Centrifugal Separators, of which the following is a specification.

The object of my present invention is to provide a removable screen for a centrifugal separatorfor removing oil or grease from waste material so that after the oil is separated, thevmaterial can be bodily removed with the screen from the basket of the cens trifugal machine. f

Some classes of material, such as ordinary cotton or woolen waste having long fibers, can be readily removed from the basket of the separator in bulk, but material having short fibers, which will densely pack against the walls ofthe basket, is very difficult to remove and I have found b making a separate screen which can be bodi y removed with the material from the basket thattlie screen can be opened and readily freed from thematerial without wasteA of' time and without injury to the basket of the separator.

In the accompanying drawings z-Figure I is a vertical sectional view of a centrifugal separator illustrating my invention; Fig. 2, is a side view of the removable screen. de-

tached from the machine Fig. 3, is a perspective view of the cover of the screen; Fig. 4, is a perspective view ofthe side walls of the screen showing the ends detached;I

Fig. 5 is a detached .view showing'part of the cover of the screen; Fig. 6, is a detail view of portions of the screenglFig. 7, is a view of a modification showing a hinged screen; and

Fig. 8, is a detail of Fig. 1, showing a portion of the basket and screen.

A is the base of the centrifugal separator, A is the outer shell Yforming a chamber in which is mounted the basket B carried by a spindle B mounted in a bearing a. The' basket .B' has a central hub b and a perforated shell b', and depending from the base of this basket areblades -c against which impinges the steam from a nozzle c connected to the pipe C. There is thus formed a turbine engine for driving the basket and the exhaust steam passes around and through the basket, acting to liquefy the oil so that it can be readily freed by centrifugal force from the waste material.

A'rg is a cap plate closing the chamber and Specification of Letters Patent.

Patented June 2.9, 1909.

G is a pipe communicating with the bottom thereof and having a trap g. This pipe Lis for the purpose of drawing off the oil or grease ,as it accumulates. I have shown in the present instance a lubricant reservoir M connected by pipes m, m, with the bearing and in the bottom ofthe bearing a is a step bearing a upon which the spindle B rests. This form of bearing and the construction of the lubricator is fully set forth and claimed in an application for patent filed of even date herewith, bearing Serial Number 355,304. l

E is the removable screen, being of such dimensions as to snugly fit within the basket B, as shown in Fig. 1, its' base flange e resting upon the bottom thereof'. This screen consists, in the present instance, of a lower flange e and an u per flange e connected together by vertica bars 62 forming a frame for the wire gauze E', which may be of any mesh desired. This frame is in fact a flexible perforated band, the ends as of which maybe united in any suitable manner; in the present instance I have shown buttons f, f on the part :v adapted to slotsf on the part as clearly illustrated in Figs. 4 and G.

I is a cover plate for the screen frame E and this cover plate is preferably made of cast metal having a ange 'L which extends over the upper flange e of the screen E. In

'the present instancein the Iiaiige 'L is a right angled recess i2 which is shaped for the recepn tion of buttons h on the Iscreen frame E, forming in fact a bayonet joint. The cover plate I is open at the center i so that the steam can freely fiow through the screen frame.v

7c, k are eyes secured to the cover plate so that the plate with the screen frame can be readily 'removed by any suitable hoisting l apparatus.

In operation the two ends of the screen frame are secured together and the cover plate is attached as shown in Fig. 2, the screen frame being then placed within the basket B of the centrifugal machine.

-The machine is loaded with saturated oi' coated waste and the cover A3 placed in position. Steam is then introduced into the pipe C and the steam jet impinging upon the blades c of-the basket causes the basket to rotate rapidly. The exhaust steam passing through the basket and through the material therein will liquefy the oil so that it can be more readily removed l'roin the material.

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The oil or grease will pass through the screen E of the screen frame and through the perforations in the Walls ot the basket into the outer chamber, from Which it is Withdrawn through the pipe G. When all the oil or grease is extracted from the material, the cover A2 is removed and the screen frame With the material therein is bodily removed from the basket. The cover plate I is then detached from the screen frame E and the two parts of the screen are unlocked. The screen is se arated so as to increase its diameter, there y causing the gauze to separate from the material Vwhen it can be readily removed, leaving lsaid material in bulk. The screen can then be assembled, replaced in the basket and the o eration repeated.

While I have s own in Fig. 4,' the screenframe made of a flexible band of metal and a liexible screen, the plarts may be hinged, as shoWn in Fig. 7, Wit out departing fromA the invention.

1. The combination in a centrifugal separator, of a rotating basket, a screen frame 1n the form of a band mounted in the basket, with means for detachably connecting the adjacent edges of said screen frame.

2. The combination in a centrifu al-separator, of a basket open at the top, a cy indrical frame removably mounted Within the basket, said frame having screened sides and an open bottom, and a cover detachably secured to the screen frame, the said sides of the frame being capable of being expanded to discharge the contents thereof when removed from the ba-sket and having means whereby they are detachably connected tooeach other.

In testimony whereof, have signed my name to this specication, in the presence of two Subscribir-gf Witnesses.

THoMAs s; PATTERSON.

Witnesses:

Jos. H. KLEIN, WM. A. BARR. 

